JP2007153242A - Automobile carrying vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automobile carrying vessel having hull structure exhibiting high safety when the hull is damaged. <P>SOLUTION: This automobile carrying vessel has a front hold provided in a bow part, in which width of the vessel 1 is changed, a central hold and a rear hold, in which width of the vessel is formed nearly constant, in a part of the vessel lower than, at least, an water-tight deck, and a plurality of vehicle decks 14 for automobiles are vertically provided inside of each of the holds. A first division chamber 32 brought in contact with an outer plate 1a of the hull and a second division chamber 34 brought in contact with the first division chamber on a side closer to the center of the hull are arranged in both sides of the hull corresponding to a front and a rear water-tight lateral partitions forming at least the central hold 12 and the rear hold 13 at a part between the car deck 14d positioned just over the load line WL and a lower vehicle deck 14c just under the corresponding vehicle deck 14d. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a car carrier, and more particularly to its hull structure.

  Usually, in a car carrier, a hold for storing a car is divided into a plurality of front and rear (in the fore-and-aft direction) by watertight transverse bulkheads arranged at predetermined intervals. In the hold, vehicle decks for storing automobiles are provided in a plurality of upper and lower stages to form a storage space for the automobiles.

As for the hull structure of this automobile carrier ship, as shown in FIG. 8, a ballast tank 52 and possibly a fuel tank 53 are arranged at the bottom of the hull 51, and the hull structure is positioned above and below the hull. There was provided a hold 55 in which a plurality of vehicle decks 54 capable of storing a car over the entire width were installed vertically (see, for example, Patent Document 1).
JP-A-5-16897

  By the way, according to the car carrier described above, a special compartment is not provided in the ship side corresponding to the hold for storing the car, that is, basically a structure in which one hull outer plate is provided. Therefore, for example, when ships collide with each other, they are easily damaged, and when they are flooded, there is a problem that stability is poor and overall safety is not good.

  Therefore, an object of the present invention is to provide an automobile carrier ship having a safer hull structure.

In order to solve the above problems, the vehicle carrier according to the present invention has a bow on the bow side provided at the bow portion where the width of the hull changes at least below the watertight deck of the hull and the center side where the width of the hull is substantially constant. It is a car carrier ship having a cargo hold, and a plurality of car storage decks are provided in the upper and lower sides in each hold,
At least on both sides of the hull between the watertight transverse bulkheads before and after forming the central side hold, and at least between the containment deck located immediately above the full load water line and the containment deck immediately below the full load water line. A first compartment contacting the plate and a second compartment arranged in contact with the center of the hull of the first compartment.

  Further, the second compartment in the car carrier is used as a fuel tank.

  According to the above-mentioned automobile carrier, even if another ship collides at least near the full waterline of the hull corresponding to the center side hold, for example, even if a crack occurs in the hull outer plate, seawater enters only the first compartment. In addition, when the collision is more severe, even if the inner wall of the first compartment is cracked, seawater can enter into the second compartment and be prevented from entering the hold, A large number of compartments will be placed near the full-length water line in the hold, so even if flooded by a collision, good restoration performance can be demonstrated, and the width of each compartment is narrow and free. The influence of the liquid level is reduced, and the restoration performance is further improved.

  In addition, for the second compartment, by using it as a fuel tank, it is possible to move the fuel tank, which is usually arranged at the top of the central ballast tank provided on the double bottom for safety, to the ship side. Since it is possible, a car can be further stored in this lost part.

[Embodiment]
Hereinafter, an automobile carrier according to an embodiment of the present invention will be described with reference to FIGS.
In this car carrier ship, a plurality of holds are provided in the hull, but the sizes are different on the watertight deck.

  In other words, the cargo hold above the watertight deck is largely made into one, while the hold below the watertight deck is divided into a plurality of horizontal bulkheads that are watertight bulkheads from the viewpoint of the safety of the hull. Since the gist relates to the hull structure relating to the hold located below the watertight deck, the following description will be made with a focus on the portion below the watertight deck.

  As shown in FIG. 1, in the hull 1 of this automobile carrier ship, the main watertight transverse bulkhead 2 divides the bow portion 4, the hold portion 5 on which the vehicle is loaded, and the stern portion 6 in which the engine room and the like are arranged. Of course, the gist of the present invention is a hull structure relating to the arrangement of the compartments in the hold part 5, so that the explanation will be given focusing on the hold part 5.

  The above-mentioned hold portion 5 has a trapezoidal shape in plan view formed so that the width of the hull 1 spreads (changes) from the bow side to the stern side by a watertight transverse bulkhead 3 different from the main watertight transverse bulkhead 2. The front hold 11 and the width of the hull 1 are substantially constant (in other words, the change in the width of the hull is small). The plan view is partitioned into a rectangular rear hold 13. The front cargo hold 11 corresponds to the bow-side hold described in the claims, and the central hold 12 and the rear hold 13 correspond to the central hold.

As shown in FIGS. 1 and 3, each of the above-mentioned holds 11 to 13 is provided with a plurality of storage decks, that is, vehicle decks 14 for storing automobiles at the top and bottom.
More specifically, in the central cargo hold 12 and the rear cargo hold 13, respectively, a first vehicle deck 14 (14a) which is an upper wall portion of a double bottom and a second to fifth vehicle deck 14 ( 14b to 14e), and the front deck 11 is configured such that the number of installation stages of the vehicle deck is different between the front portion 11a and the rear portion 11b. For example, the second and fifth vehicle decks 14 (14b to 14e) are provided in the rearward front hold 11b, and the fourth and fifth vehicle decks 14 (14d and 14e) are provided in the frontward front hold 11a. Is provided. Therefore, the installation positions of the watertight transverse bulkhead 3 (3a) in front of the front front hold 11a and the watertight transverse bulkhead 3 (3b) in front of the rear front hold 11b are different from each other in the bow-stern direction.

  Further, as shown in FIG. 3, a center ballast tank (also referred to as a double bottom ballast tank) 21 is disposed at the double bottom of the hull 1, and the hull 1 corresponding to the center cargo 12 and the rear cargo 13. Ship side ballast tanks 22 are arranged at the corners of the two ship side portions.

The inner wall body 23 of the hull 1 forming the ship side ballast tank 22 is formed in a stepped shape. Specifically, an upper wall section 23a closer to the ship side provided at the same position as the third vehicle deck 14c, A ship-side side wall 23b connected to the inner end of the ship-side upper wall 23a, a ship-side side wall 23b connected to the lower end of the ship-side side wall 23b, and close to the center of the hull provided at the same position as the second vehicle deck 14b The upper wall portion 23c and a hull center side wall portion 23d connected to the inner end of the hull center side upper wall portion 23c are formed into a shape in which a concave portion is formed near the hull center portion. .
Further, as shown in FIGS. 2 to 7, the third vehicle deck 14 c located immediately below the full load water line WL and the fifth vehicle deck (the watertight deck and the loading deck) on the second stage upward from the full load water line WL. 14e, a first partition wall 32 having a predetermined width is provided along the hull outer plate 1a by the first partition wall body 31, and is close to the center of the hull of the first partition chamber 32 and full load water line WL. A second compartment 34 having a predetermined width is formed by the second partition wall 33 between the second vehicle deck 14b two steps below and the fourth vehicle deck 14d immediately above the full load water line WL. 32 and the ship side ballast tank 22. 5 is a horizontal sectional view at a position immediately above the second vehicle deck 14b, FIG. 6 is a horizontal sectional view at a position immediately above the third vehicle deck 14c, and FIG. 7 is a position immediately above the fourth vehicle deck 14d. FIG.

  That is, a portion between the fourth vehicle deck 14d immediately above the full load water line WL and the third vehicle deck 14c and the second vehicle deck 14b at the second stage (of course, the fifth vehicle deck which is a watertight deck). 14e), the two compartments 32 and 34 are formed in contact with the hull outer plate 1a on the inner side. In other words, the outer plate and the longitudinal wall are provided in triplicate. (It can be said that it has a triple wall structure).

  Moreover, in the said front hold 11, as shown in FIGS. 4-6, the part (henceforth the rear front hold 11b) where a ship side part ballast tank 22 exists, and the part (henceforth front). The hull structure in the rear front hold 11b is the same as that described in the center hold 12 and the rear hold 13, that is, by the first partition wall 41. Only the first compartment 42 is provided.

  In addition, as shown in FIG. 2, since the height of the front side forward hold 11a and the rear side front hold 11b is different with respect to the front hold 11, the height of the first compartment 42 provided in each is also set. Have been made different.

  That is, as for the portion corresponding to the front-side forward hold 11a, at least the portion between the fourth vehicle deck 14d and the second fifth vehicle deck 14e immediately above the full load water line WL is a double wall structure. Has been.

  In addition, as shown in FIG. 3, the 6th-9th vehicle deck (14f-14i) is provided in the hold above the 5th vehicle deck 14e which is a watertight deck. In the drawing, the illustration of the vehicle deck is omitted, and only the member numbers are shown.

  In the above description, four stages of vehicle decks are provided in the hold below the fifth vehicle deck 14e, which is a watertight deck. However, the number of stages is not limited to this, and in short, a position below the watertight deck. In addition, the two compartments 32 and 34 may be provided in contact with a portion between the vehicle deck 14d immediately above the full load water line and at least the vehicle deck 14c immediately below or the second-stage vehicle deck 14b. Therefore, the present invention can be applied to a vehicle deck provided with three or more stages. Of course, the number of vehicle decks installed in the hold above the watertight deck can be arbitrarily selected.

  According to this automobile carrier, even if another ship collides with the vicinity of the full-length water line WL of the hull 1 corresponding to the center cargo 12 and the rear cargo 13, and the crack is generated in the hull outer plate 1a, for example, the first compartment Even when seawater enters only in 32 and the collision is more severe and the first partition wall body 31 forming the first partition chamber 32 is cracked, seawater enters the second partition chamber 34, It is possible to prevent the second compartment wall body 33 from being flooded into the hold, and a large number of compartments 32 and 34 are disposed in the vicinity of the full load water line WL in the hold 5 so that a collision occurs. Even when the water is immersed in the water, good recovery performance can be exhibited, and the width of each of the compartments 32 and 34 is narrow, so that the influence of the free liquid level is reduced and the recovery performance is further improved.

  It should be noted that even in the portion of the front hold 11 where the influence of damage due to the collision is small, particularly in the front close hold 11b, the portion between the fourth vehicle deck 14d and the third vehicle deck 14c located above and below the full load waterline. The first compartment 42 is provided to improve safety.

  Further, with respect to the second compartment 34, by using it as a fuel tank, for example, the fuel tank that is usually arranged at the upper part of the central ballast tank 21 can be moved to the ship side, for example. A car can be further stored in the lost part, and as described above, a reduction in the car storage space that occurs when a large number of compartments are formed for the safety of the ship can be suppressed. .

  In addition to the fuel oil tank, the second compartment 34 can be used as a ballast tank and a fresh water tank, and the first compartments 32 and 42 can be used as a ballast tank and a fresh water tank. Can be used.

  By the way, in embodiment mentioned above, although only the 1st division chamber was arrange | positioned about the front part hold, for example, a 1st and 2nd division room can also be juxtaposed like a center part hold and a rear hold. . Thus, the safety of the hull can be further improved by juxtaposing the two compartments for the entire hold part.

It is a longitudinal cross-sectional view of the motor vehicle carrier which concerns on embodiment of this invention. It is a longitudinal cross-sectional view which shows the compartment provided in the same motor vehicle carrier. It is AA half sectional drawing of FIG. FIG. 3 is a half-sectional view taken along the line B-B in FIG. 2. It is CC horizontal sectional drawing of FIG. It is DD horizontal sectional drawing of FIG. It is EE horizontal sectional drawing of FIG. It is a hull cross-sectional view of a conventional example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hull 2 Main watertight transverse bulkhead 3 Watertight transverse bulkhead 4 Hull part 5 Hull part 6 Stern part 11 Front hold 12 Central hold 13 Rear hold 14 Vehicle deck 21 Central ballast tank 22 Ship side ballast tank 23 Inner side wall 31 1st division wall body 32 1st division chamber 33 2nd division wall body 34 2nd division chamber 41 1st division wall body 42 1st division chamber

Claims (2)

At least below the watertight deck of the hull, it has a bow at the bow where the width of the hull changes and a central hold where the width of the hull is almost constant, and the car is stored in each of these holds An automobile carrier ship with a plurality of decks above and below,
At least on both sides of the hull between the watertight transverse bulkheads before and after forming the central side hold, and at least between the containment deck located immediately above the full load water line and the containment deck immediately below the full load water line. A vehicle carrier characterized in that a first compartment in contact with a plate and a second compartment in contact with the center of the hull of the first compartment are arranged.   The car carrier according to claim 1, wherein the second compartment is used as a fuel tank.

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